private void processProgramMapSection(ProgramMapSection programMapSection, ProgramInfo programInfo, Collection <TVStation> tvStations)
{
TVStation tvStation = findTVStation(programInfo.ProgramNumber, tvStations);
if (tvStation == null)
{
return;
}
foreach (StreamInfo streamInfo in programMapSection.StreamInfos)
{
if (streamInfo.StreamType == streamTypeVideo)
{
tvStation.VideoPID = streamInfo.ProgramID;
}
if (streamInfo.StreamType == streamTypeAudio)
{
tvStation.AudioPID = streamInfo.ProgramID;
}
if (streamInfo.StreamType == streamTypeDSMCCUserToNetwork)
{
tvStation.DSMCCPID = streamInfo.ProgramID;
}
}
}
private void processProgramInfo(ProgramInfo programInfo, Collection <TVStation> tvStations)
{
dataProvider.ChangePidMapping(new int[] { programInfo.ProgramID });
TSReaderBase pmtReader = new TSStreamReader(BDAGraph.PmtTable, 2000, dataProvider.BufferAddress);
pmtReader.Run();
Collection <Mpeg2Section> sections = new Collection <Mpeg2Section>();
int repeats = 0;
bool done = false;
while (!done)
{
Thread.Sleep(10);
pmtReader.Lock("ProcessPMTSections");
if (pmtReader.Sections.Count != 0)
{
foreach (Mpeg2Section section in pmtReader.Sections)
{
sections.Add(section);
}
pmtReader.Sections.Clear();
}
pmtReader.Release("ProcessPMTSections");
done = (sections.Count != 0);
if (!done)
{
repeats++;
done = (repeats == 500);
}
}
pmtReader.Stop();
if (sections.Count == 0)
{
Logger.Instance.Write("No PMT sections received");
return;
}
else
{
foreach (Mpeg2Section section in sections)
{
ProgramMapSection programMapSection = ProgramMapSection.ProcessProgramMapTable(section.Data);
processProgramMapSection(programMapSection, programInfo, tvStations);
}
}
}
/// <summary>
/// Parse the section.
/// </summary>
/// <param name="byteData">The MPEG2 section containing the section.</param>
/// <param name="mpeg2Header">The MPEG2 header that preceedes the section.</param>
internal void Process(byte[] byteData, Mpeg2ExtendedHeader mpeg2Header)
{
lastIndex = mpeg2Header.Index;
transportStreamID = mpeg2Header.TableIDExtension;
sectionNumber = mpeg2Header.SectionNumber;
lastSectionNumber = mpeg2Header.LastSectionNumber;
while (lastIndex < byteData.Length - 4)
{
ProgramInfo programInfo = new ProgramInfo();
programInfo.Process(byteData, lastIndex);
programInfos.Add(programInfo);
lastIndex = programInfo.Index;
}
}
private void processProgramMapSection(ProgramMapSection programMapSection, ProgramInfo programInfo, Collection<TVStation> tvStations)
{
TVStation tvStation = findTVStation(programInfo.ProgramNumber, tvStations);
if (tvStation == null)
return;
foreach (StreamInfo streamInfo in programMapSection.StreamInfos)
{
if (streamInfo.StreamType == streamTypeVideo)
tvStation.VideoPID = streamInfo.ProgramID;
if (streamInfo.StreamType == streamTypeAudio)
tvStation.AudioPID = streamInfo.ProgramID;
if (streamInfo.StreamType == streamTypeDSMCCUserToNetwork)
tvStation.DSMCCPID = streamInfo.ProgramID;
}
}
private void processProgramInfo(ProgramInfo programInfo, Collection<TVStation> tvStations)
{
dataProvider.ChangePidMapping(new int[] { programInfo.ProgramID } );
TSReaderBase pmtReader = new TSStreamReader(BDAGraph.PmtTable, 2000, dataProvider.BufferAddress);
pmtReader.Run();
Collection<Mpeg2Section> sections = new Collection<Mpeg2Section>();
int repeats = 0;
bool done = false;
while (!done)
{
Thread.Sleep(10);
pmtReader.Lock("ProcessPMTSections");
if (pmtReader.Sections.Count != 0)
{
foreach (Mpeg2Section section in pmtReader.Sections)
sections.Add(section);
pmtReader.Sections.Clear();
}
pmtReader.Release("ProcessPMTSections");
done = (sections.Count != 0);
if (!done)
{
repeats++;
done = (repeats == 500);
}
}
pmtReader.Stop();
if (sections.Count == 0)
{
Logger.Instance.Write("No PMT sections received");
return;
}
else
{
foreach (Mpeg2Section section in sections)
{
ProgramMapSection programMapSection = ProgramMapSection.ProcessProgramMapTable(section.Data);
processProgramMapSection(programMapSection, programInfo, tvStations);
}
}
}
/// <summary>
/// Parse the section.
/// </summary>
/// <param name="byteData">The MPEG2 section containing the section.</param>
/// <param name="mpeg2Header">The MPEG2 header that preceedes the section.</param>
internal void Process(byte[] byteData, Mpeg2ExtendedHeader mpeg2Header)
{
lastIndex = mpeg2Header.Index;
transportStreamID = mpeg2Header.TableIDExtension;
sectionNumber = mpeg2Header.SectionNumber;
lastSectionNumber = mpeg2Header.LastSectionNumber;
while (lastIndex < byteData.Length - 4)
{
ProgramInfo programInfo = new ProgramInfo();
programInfo.Process(byteData, lastIndex);
programInfos.Add(programInfo);
lastIndex = programInfo.Index;
}
}